Device for renewing valves gnd valve-seats



(NoMod eli) G. W. HOLLINGSWORTH.

DEVICE FOR RENEWING VALVES AND VALVE SEATS.

No. 371,321. Patented Oct. 11. 1887.

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SPECIPICATIGN forming part of Iletters Patent N-o. 311,321, dated Dctober 11, 1887.

' Applicntion filed-M11025, 1881. SerlnlNmEllMBO. n) model.)

Tc all whom is may oonoern: y Be itknown that I, GEORGE W. HOLLINGS- ,WGRTH, of "Philadelphia, in the county of Philadelphia and State of Pennsylvania, here invented s new and Improved Hand-Drill for Renewing Valves endVnlve-Seats, of whioh' the following is affnll, clear, and exact; desorlplion.

The object; of my invention is to provide a w new and improved hand-drill esnecielly adapted for renewingwornonl:v valves and valve-seals withons disconnecting the valve from ibspipe end without disturbing the latter. v I

Theinveniion consists in the construction and arrangement of certain parts snd'delails and combinations of the same, no will be fully described; liereinnfbensndthen poinfierLout in the claims, 1 Q

Beference is to he lied to the accompanying drawings, forming 2. part of this specification, in which similar letters of reference indicate sorresponding parts in all the figures.

: Fignre'l is a. side elevation of myimprove- 2 menl? with ports in, section, Fig. 2 iso plan view of one ohuolz holding the cutter for grinding the valves, and is (nee view of the clamp. I

My improved band drill is snnporteol on n 9 clamp, A, ori nted to be fastened to the pipe carrying we valve 0, thesenl; G of which is lo be renewed. Tlleolslnpii is provided with two jaws, I), which can be opened and placed aronndtne pipe 28 and then closed and locked by a pin, E, passing through the free overlappingends ofseid jaws B. into one of rhedntter screws e sessorew, ll, which is Ahe'nscrewed up against the pipe B, thus securing the clamp A to said pipe 28..

Thejsws B are clamped on the boil; G, projeoting from the seller H,s,nd said jaws D are fastened onsaid bolt G by thewashsr and non Lscrewing on the bolt G and against the clamp A, so that; the latter is pressed against the 5 collar H and securely held in place on the bol s G between the said collar H and the washer and the nnl; I. Itwill be seen that the clamp A can-be fastened on the pipe B and on the bolt G in on y desired place and at any desired angle according to the loan-lion of the valve 0 in the pipe B, and according to the place of the latter,..so ss'to' enable the operator to nso' the hand drill oonvenientlyfor renewing the valve, especially whenbllo valve is located in .s limited space. The collar H is adjustable by a sob-screw, H, on the upright rod or post J on which are 4 lield to slide the arms 1i and L, fastened by setscrews or other means to the upright; J. in the outor end of the upper arm, K, screws she hollow spindle N, carrying near its 'lrppor end a hand-wheel, N, for turning 'snld spindle N in the arm K. vflhrongh the spindle N passes the centering-shaft; 0, provided on its opger end with a crank-arm, Q, resting with its hub on. the upper endol' the hub of the .wheel N, thus,sn'pporting meshed: O, and serving'to turn the latter in the spindle N.

On'tlie lower end of the shall-,0 is held the dog P, of any approved construction, and adapted to engage 2:. spoke of the wheel of the valvestem Q, as shown at the left of Fig. 1, and said dog 39 engages a second dog or arm,

. P, held on the stem R of the seat proper, R,

as shown at the righb of Fig. 1.

- On the end of the lower arm, L, is fastened, by a sebscrew or other means, a. sockes or holder, S, in which is held by the set-screw S the valve-cutter T, provided with the usual ontfiingedges T, formed in a central coneshaped opening, and said valve-cutter 'I is also provided with a central contering-opening, T in its bottom, through which opening passes the upper pointed-end of the arbor U, held- 3o slide vertically in a central aperture of 85 theshanl: S of .the chuck S, and resting with its bolztom on the spring V- of rubber or other suitable material. The springVcan be raised and lowered in the hollow shank S by the setscrew W,screwing into the lower shank of the hollow sbankoS' and-held in place by a jamtwfl .7

The operation is as follows: The clamp Ais secured to the pipe B, as above described, so that the upright; J is parallel with the axis of 5 the valve sent G. In order to grind or out; the valve Q, secured to the valve-stem Q, I adjust lire hand-wheel as shown at bhelefls of Fig. 1--

,phn tfis, theoonteringend of the shaft 0 fits on use top of the shell; (32' and the centering end of 10 the arbor U engages the lower end of said valve Q, which is held in the cutter 'l, which latter, the valvestem Q, the arbor U, and theshaft O are held axially in relation to each other. The operator now turns the crank-arm shaft 0 are fed downward, and the valve Q'is thus pressedfirmly in contact with the cutting edges 'Iiof the cutter T, so that the valve is cut. The elasticity of the spring V permits this downward movement of the valve Q, as above described. By a justing the. arbor U up or down. in the shank S, am enabled to out large or small valves.

The seat 0' of the valve 0 is out as represented at the right of Fig. 1, and in this case I dispense with the lower arm, L, and place the centering end of the shaftO on top of the stem R of the seat cutting tool R, which is placed in the seat C of said valve 0. The

dog I on the shaft 0 engages the dog I" on the stem It, and when the operator turns the crank-arm O and the hand-wheel N, asv

above described, then the seatcutting tool R cuts and renews the seat 0 of the valve 0. The valve Q can also be ground into the valve seat C by substituting the valve Q audits stem Q, for the seat-cutting tool R and its stem R and repeating the operation, as above described that is, turning the hand-wheel N and the crank-arm 0. Thus it will be seen that the -valve-seats can be easily and conveniently renewed in their places without disturbing the valve-casing and the pipe on which the valve is secured, and the corresponding valve for the seat is also reeut to correspond to the re- I newed valve seat.

Having thus fully described my invention, I claim as new and desire to secure by Lettels Patent- 1. In a device for renewing valves and valveseats, the combination, with a clamp adapted to be secured to the pipe carrying the valve to be cut, of an upright post supported by said clamp and carrying the drilling mechanism,- substantially as shown and described.

2. In adevice for renewing valves and val veseats, the combinatiou,with a clamp comprising the pivoted jaws, of means, substantially as described, for locking sai'd jaws, and a setscrew for fastening said clamp to a pipe carrying the valve to be cut, substantially as shown and described.

3. In a device for renewing valves and valve-' seats, the combinatiomwith a clamp having "pivoted jaws adapted to inclose the pipe carrying-the valve to be cut, of means, substan tially as described, for locking said jaws, a setscrew for fastening said clamp to the pipe carrying the valve to be cut, a bolt'on which said jaws are fulcrn-med, a'collar on said bolt, said collar supporting an upright carrying the ,drilling ,mechanism. and a washer and nut screwing on said bolt for securing said clamp on said bolt, substantially as shown and described. 4. In adevice for renewing'valves and valveseats, the combination, with a clamp and up-v right, of two arms held adju'stably on said upright, a hollow tln'eaded spindle screwing in the upper one of said arms, a shaft held to turn in said hollow spindle, a dog secured to' one end of said shalt, and a socket held in the lower one of said arms and carrying the tool for cutting the valve, substantially as described.

5. In a devicefor renewing valves and valvescats, the combination, with a clamp and an upright, of an arm held adjustably'on said upright, a hollow spindle screwiugin said arm, a shaft held to turn in said hollow spindle, a crank-arm secured to the upper end of said shaft, and a dog fastened on the lower end of seats, the combination, with a clamp and an upright, of an arm held adjustably on said upright, a socket or holder secured on said arm, a valve-cutting tool supported in said chuck or holder and provided with a central aperture leading to the cone-shaped aperture carrying the cutting edges, an arbor held in 'saidchuck and passing through the central aperture in said valve-cutting tool, a spring on which said arbor rests, and a set-serew for adjustingsaid spring, substantially as shown and described.

GEORGE W. HOLLINGSWORTH.

\Vitnesses:

E. B. Honnmoswomn, Jaatss H. ARMSTRONG. 

